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Increasing Raw Mill Output

March 21, 2003,

Dear Sirs,

Presently our Raw Material Grinding Ball Mill (with 2 chambers and centre discharge) is producing from 170 to 180 metric tons of Raw Meal per hour. Since our Kiln will be upgraded to enhance output, the Raw Mill will be required to produce at least 200 tons per hour to meet the increased output of the Kiln.

Mill feeding conveyors and discharge airslides and Airlift capacity is 250 metric tons per hour, hence more than enough.

Mill is equipped with Step Lining in the first chamber and Classified Linings in the second chamber, a static separator and High Efficiency Dynamic Separator.

Conveyor Dynamics, Inc. (CDI) has developed a discrete element model (DEM) incorporating breakage along with fluid and gas dynamics.

We are specialist in mill theorectical and practical grinding mechanics using DEM together with statistical performance (MILLSTAT) and population balance modeling (PBM). Lifter or step liner shape optimizaton yielding a capacity increase in the range of 10-15% may be possible.

We have sold the above technology to Metso Minerals for their exclusive use. Either you can contact them or call us to give you the knowledge or information required to carry out the necessary modeling.

Raw Mill Capacity Enhancement.

I am writing this after going through your subject mentioned posting at the site.

We can Offer you an IMPACTOR which will reduce the size of fresh feed to the ball mill and your capacity can be enhanced.

In this regard, my colleague will contact you separately.

Apart from this I have noticed that you ar using airlift for feeding of Preheater.

In this case, I take this opportunity to inform you that we at ENEXCO in India, has already supplied more than 100 numbers of Bucket Elevators for various application i.e. Cement Silo Feed, Kiln Feed Application, Raw Meal Silo Feed, etc. for the Cement Industry.

In fact, of late only, we have commissioned a 120 tph capacity x 103 meters long single STEEL CORD REINFORCED Belt Bucket Elevator at M/s Sagar Cement, Hyderabad, India. In fact our supplied Kiln Feed Application Stel Cord Belt Bucket Elevators are operating at lot many more cement plants. I have named a few for your ready reference hereunder.

By changing the airlift, with a Steel Cord Belt Bucket Elevator, you will able to save a tremendous amount of power and even decrease the fuel consumption at the kiln, as you will have a reduced amount of air going to the kiln, ESP/ bag House, Preheater Fan etc.

I am sure that this proposal of mine will meet your attention and you would send me the details of your existing plant so that I could send you a proposal for your kind perusal.